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> Mysterious holes.
CameronT
post Feb 22 2012, 11:20 PM
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2d 5h 45m 52s




Can anyone tell me what the purpose of thoe holes in the upper part of my frame are? I'm pretty sure all of the 90's had the hole.


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Cameron.
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snboarder113
post Feb 23 2012, 02:12 AM
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all years have the air intake tube connection holes.... doesn't connect to the airbox, mostly aesthetic i believe.

This post has been edited by snboarder113: Feb 23 2012, 02:13 AM


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navi7
post Feb 23 2012, 02:27 AM
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these holes or rather the frame air intake are made for to cool down the frame i believe ... wink.gif
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snboarder113
post Feb 23 2012, 03:08 AM
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Thats the theory, don't think we ever established that as fact.


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rotortech
post Feb 23 2012, 07:24 AM
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My personal theory is that it promotes air circulation in the area under the tank cover to keep the coils from cooking. The holes in the frame don't look like enough area to feed the engine much. I also don't believe that they are there just for looks. The design is too involved for that - Metal tubes, rubber elbows on each end, ducts molded into the fairings.


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Rotortech
Indianapolis

1994 Yamaha FZR 600 Purchased as project bike Jan 2010
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blensen
post Feb 23 2012, 07:43 AM
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QUOTE (rotortech @ Feb 23 2012, 07:24 AM) *
My personal theory is that it promotes air circulation in the area under the tank cover to keep the coils from cooking. The holes in the frame don't look like enough area to feed the engine much. I also don't believe that they are there just for looks. The design is too involved for that - Metal tubes, rubber elbows on each end, ducts molded into the fairings.


All I know is that I've been running without mine for a couple of seasons with no ill effects, and no noticeable difference compared to when I did have them.


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Suprafreak13
post Feb 23 2012, 09:12 AM
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The pretend ram air, funny when you pull the elbow out of the frame and see the <1" hole on the inside of the frame. I think it would provide some cooler air for under the tank cover. I took them off of my race bike with no issues, those metal tubes are heavy!
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apsolus
post Feb 25 2012, 04:03 PM
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its pretty obvious there just there for looks. they dont do squat. there even more usless looking on my 1000


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have:
88 yamaha fzr 1000
87 honda super magna 700
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89 yamaha fzr 600
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snboarder113
post Feb 25 2012, 04:28 PM
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103d 4h 52m 7s




I use mine for connecting ratchet straps when I'm working on it and throwing them over the garage rafters as a safety catch. Saved my bike twice.



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kustomizingkid
post Feb 26 2012, 07:30 PM
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I had some plates waterjet out to fill said holes in... I am planning to smooth out my frame and then have it powdercoated.


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CameronT
post Feb 26 2012, 11:35 PM
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2d 5h 45m 52s




Does anyone have a side view pic of their bike with out the Air tunes?


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Cameron.
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